There are 721 thirteen-letter words containing 2A, P and S, https://www.bestwordlist.com/c/a/4/13letterwordswithaaps.htm
ABYSSOPELAGIC ACCOMPANYISTS ACHROMATOPSIA ADAPTABLENESS ADAPTATIONIST
ADAPTEDNESSES ADIAPHORISTIC AEROPLANKTONS AGAMOSPERMIES AICHMOPHOBIAS
AILUROPHILIAS AILUROPHOBIAS ALDERMANSHIPS ALEXIPHARMICS ALLELOPATHIES
ALPHABETISERS ALPHABETISING ALPHABETIZERS ALPHANUMERICS AMPHIBLASTULA
AMPHIGASTRIUM AMPHISTOMATAL AMPHISTOMATIC AMPHITHEATERS AMPHITHEATRES
ANALPHABETICS ANALPHABETISM ANAPHRODISIAC ANAPHRODISIAS ANEMOGRAPHIES
ANENCEPHALIAS ANENCEPHALIES ANGELOPHANIES ANGIOGRAPHIES ANGIOPLASTIES
ANGLOPHOBIACS ANISOMETROPIA ANTICIPATIONS ANTIPARALLELS ANTIPARASITIC
ANTIPARTICLES ANTIPHONARIES ANTIPLATELETS ANTISPASMODIC AORTOGRAPHIES
APATOSAURUSES APHANIPTEROUS APHRODISIACAL APLANOGAMETES APOCALYPTISMS
APOCALYPTISTS APOCATASTASES APOCATASTASIS APOCHROMATISM APOSTOLICALLY
APOTHEGMATISE APOTHEGMATIST APPEALINGNESS APPOGGIATURAS APPRAISEMENTS
APPRECIATIONS APPROPRIACIES APPROPRIATORS APPURTENANCES ARACHNOPHOBES
ARCHIPELAGOES ARPEGGIATIONS ARSPHENAMINES ARTHROPATHIES ASPARAGINASES
ASPHYXIATIONS ASSISTANTSHIP ASSOCIATESHIP ASTRAPOPHOBIA ASTROPHYSICAL
ATMOSPHERICAL ATYPICALITIES AUTOCEPHALIES AUTOCEPHALOUS AZATHIOPRINES
BACKSLAPPINGS BANDSPREADING BIPARTISANISM BLEPHAROPLAST BLEPHAROSPASM
BRACHYCEPHALS CAESAROPAPISM CALLIGRAPHERS CALLIGRAPHIES CALLIGRAPHIST
CAMERAPERSONS CAMPANOLOGERS CAMPANOLOGIES CAMPANOLOGIST CAMPHORACEOUS
CANCERPHOBIAS CANDIDATESHIP CAPABLENESSES CAPACIOUSNESS CAPACITATIONS
CAPERCAILLIES CAPERCAILZIES CAPILLARITIES CAPITULATIONS CAPNOGRAPHIES
CARDINALSHIPS CARDIOPATHIES CARDIOPLEGIAS CARDSHARPINGS CARPETBAGGERS
CARTOGRAPHERS CARTOGRAPHIES CATASTROPHISM CATASTROPHIST CATHODOGRAPHS
CEPHALISATION CEPHALOPODANS CERAUNOGRAPHS CHAIRMANSHIPS CHAPLAINSHIPS
CHLOROPLASTAL CHROMATOPSIAS CLAMJAMPHRIES CLAPPERBOARDS CLEPTOMANIACS
COADAPTATIONS COMPANIONWAYS COMPARATIVIST COMPASSIONATE COMPLAISANCES
COMPLAISANTLY COMPLANATIONS COPARCENARIES COPLANARITIES CRAFTMANSHIPS
CRAFTSMANSHIP CRAPEHANGINGS CRYPTANALYSES CRYPTANALYSIS CRYPTANALYSTS
DEASPIRATIONS DECAPITALISED DECAPITALISES DECAPITALIZES DECAPITATIONS
DECAPSULATING DECAPSULATION DERMAPLANINGS DERMATOPLASTY DEUTERANOPIAS
DIALYPETALOUS DIAPHANEITIES DIAPHRAGMITIS DILAPIDATIONS DIPSOMANIACAL
DISAPPARELLED DISAPPEARANCE DISCAPACITATE DISPARAGEMENT DISPARAGINGLY
DISPARATENESS DISPASSIONATE DISPLANTATION DISPLEASANCES DISPLEASANTED
DRAFTSMANSHIP DRAPABILITIES ECTOPARASITES ECTOPARASITIC ELEPHANTIASES
ELEPHANTIASIC ELEPHANTIASIS EMANCIPATIONS ENCAPSULATING ENCAPSULATION
ENDOPARASITES ENDOPARASITIC ENHYPOSTASIAS EPANADIPLOSES EPANADIPLOSIS
EPIGRAMMATISE EPIGRAMMATISM EPIGRAMMATIST EPINASTICALLY EPISCOPALIANS
EPISTOLARIANS EPITHALAMIUMS EQUIPARATIONS ERGASTOPLASMS EUPHAUSIACEAN
EUSPORANGIATE EVAPOROGRAPHS EXASPERATEDLY EXASPERATIONS EXOPHTHALMIAS
EXPATRIATIONS EXPATRIATISMS EXPLANTATIONS EXTRAPOLATORS FLANNELGRAPHS
FLUORAPATITES FRANCOPHOBIAS GALVANOPLASTY GALVANOSCOPES GALVANOSCOPIC
GAMESMANSHIPS GLADIATORSHIP GLASSPAPERING GRADUATESHIPS GRANTSMANSHIP
GRAPHICALNESS GRAPHITISABLE GRAPHOPHOBIAS GUARDIANSHIPS HAEMOPHILIACS
HAGIOGRAPHERS HAGIOGRAPHIES HAGIOGRAPHIST HALIPLANKTONS HAPHAZARDNESS
HAPHAZARDRIES HAPLOGRAPHIES HAPPENCHANCES HAPPENSTANCES HARMONOGRAPHS
HARUSPICATING HARUSPICATION HEMATOPHAGOUS HEMIPARASITES HEMIPARASITIC
HEPATISATIONS HEPATIZATIONS HEPTASYLLABIC HERPETOFAUNAS HETEROPLASIAS
HOLOPARASITES HOLOPARASITIC HYDNOCARPATES HYPAESTHESIAS HYPERALGESIAS
HYPERAROUSALS HYPERPARASITE HYPERSARCOMAS HYPNOANALYSES HYPNOANALYSIS
HYPOCALCEMIAS HYPONATREMIAS HYPOSPADIASES IAMBOGRAPHERS IDIOPLASMATIC
IMPARTIALNESS IMPASSABILITY IMPLANTATIONS INADAPTATIONS INCAPABLENESS
INCAPACITANTS INCAPACITATES INCAPSULATING INCAPSULATION INSPIRATIONAL
INTERSCAPULAR INTRACAPSULAR INTRAPERSONAL IPSILATERALLY JAPONAISERIES
KARYOMAPPINGS KERATOPLASTIC KERAUNOGRAPHS KLEPTOMANIACS LALLAPALOOZAS
LAPAROSCOPIES LAPAROSCOPIST LARYNGOSPASMS LAUREATESHIPS LIBRARIANSHIP
LITHOLAPAXIES LOLLAPALOOSAS LOLLAPALOOZAS LYMPHANGIOMAS LYMPHOSARCOMA
MAGNETOGRAPHS MAGNETOPAUSES MALABSORPTION MALACOPHILIES MALACOPHILOUS
MAMMAPLASTIES MAMMOGRAPHIES MAMMOPLASTIES MANIPULATIONS MANIPULATIVES
MANSPLAININGS MANSPREADINGS MARCONIGRAPHS MARIMBAPHONES MARKSMANSHIPS
MARSIPOBRANCH MARSUPIALIANS MASTIGOPHORAN MAXIMAPHILIES MEGACEPHALIES
MEGACEPHALOUS MEGASPORANGIA MESATICEPHALY METAPHOSPHATE METAPHYSICIAN
METAPSYCHICAL MICROPARASITE MISAPPRAISALS MISAPPRECIATE NANOPARTICLES
NANOPLANKTONS NAPHTHALISING NASOPHARYNGES NASOPHARYNXES NATUROPATHIES
NEOCAPITALISM NEOCAPITALIST NEOPAGANISING NONCAPITALIST NONDIAPAUSING
NYMPHAEACEOUS NYMPHOMANIACS ONOMATOPOEIAS OPISTHOSOMATA PACIFICATIONS
PACKABILITIES PAEDOBAPTISMS PAEDOBAPTISTS PAEDOPHILIACS PAGANISATIONS
PAGANIZATIONS PAINSTAKINGLY PAINTBALLINGS PALAEOCRYSTIC PALATABLENESS
PALEOBOTANIES PALEOBOTANIST PALEOGRAPHERS PALEOGRAPHIES PALIFICATIONS
PALINGENESIAS PALLETISATION PALPABILITIES PALUDAMENTUMS PANAESTHESIAS
PANAESTHETISM PANCHROMATISM PANCYTOPENIAS PANDAEMONIUMS PANGRAMMATIST
PANIFICATIONS PANPHARMACONS PANSEXUALISMS PANSEXUALISTS PANSOPHICALLY
PANSPERMATISM PANSPERMATIST PANTHEISTICAL PANTISOCRATIC PANTOGRAPHERS
PANTOGRAPHIES PANTOPHAGISTS PANTOTHENATES PAPAPRELATIST PAPAVERACEOUS
PAPERHANGINGS PAPILLOMATOUS PAPOVAVIRUSES PARABOLANUSES PARACHRONISMS
PARACYANOGENS PARADOXURINES PARAESTHESIAS PARAGNATHISMS PARAGRAPHISTS
PARAHYDROGENS PARALANGUAGES PARALLELISING PARALLELISTIC PARALYSATIONS
PARALYZATIONS PARAMAGNETISM PARAMENSTRUUM PARAMETERISED PARAMETERISES
PARAMETERIZES PARAMETRISING PARAMORPHINES PARAMORPHISMS PARAMOUNTCIES
PARAMYXOVIRUS PARANEPHROSES PARAPHRASABLE PARAPOPHYSIAL PARAPSYCHICAL
PARAPSYCHISMS PARAPSYCHOSES PARAPSYCHOSIS PARAQUADRATES PARARESCUEMAN
PARARESCUEMEN PARASCENDINGS PARASEXUALITY PARASITAEMIAS PARASITICALLY
PARASITICIDAL PARASITICIDES PARASITOLOGIC PARASPHENOIDS PARASYMBIONTS
PARASYMBIOSES PARASYMBIOSIS PARASYMBIOTIC PARASYNTHESES PARASYNTHESIS
PARASYNTHETIC PARASYNTHETON PARATHORMONES PARFOCALISING PARFOCALITIES
PARKINSONIANS PAROCCIPITALS PAROCHIALISED PAROCHIALISES PAROCHIALISMS
PAROCHIALIZES PARTIALNESSES PARTICIPATORS PARTICULARISE PARTICULARISM
PARTICULARIST PARTISANSHIPS PARTIZANSHIPS PARVANIMITIES PASIGRAPHICAL
PASSEMEASURES PATERFAMILIAS PATERNALISTIC PATHOGRAPHIES PATRIARCHATES
PATRIARCHISMS PATRILINEAGES PATRISTICALLY PATRONISATION PAUPERISATION
PEACEABLENESS PEDIATRICIANS PEIRASTICALLY PENALISATIONS PENALIZATIONS
PENTADACTYLES PENTAHYDRATES PENTASYLLABIC PENTAVALENCES PERAMBULATORS
PERMANGANATES PHAEOMELANINS PHALANSTERIAN PHALANSTERIES PHALANSTERISM
PHALANSTERIST PHANEROGAMOUS PHANTASMAGORY PHANTASMALIAN PHANTASMALITY
PHARISAICALLY PHARMACEUTICS PHARMACEUTIST PHARMACOGNOSY PHARMACOPEIAS
PHENARSAZINES PHENYLALANINS PHONASTHENIAS PHOSPHATURIAS PHRAGMOPLASTS
PHRASEMAKINGS PHRASEOGRAPHS PHRASEOGRAPHY PHYSHARMONICA PHYTOSANITARY
PIACULARITIES PIANISTICALLY PISCATORIALLY PLACABILITIES PLACENTATIONS
PLAGIOCLASTIC PLANETESIMALS PLANIGRAPHIES PLANOGRAPHIES PLANTOCRACIES
PLASMODESMATA PLASTERBOARDS PLASTINATIONS PLASTOCYANINS PLATINISATION
PLAYABILITIES PLESIOSAURIAN PLURALISATION POLARISATIONS POLARIZATIONS
POLLYANNAISMS POLYGALACEOUS POLYTHALAMOUS POSTAPARTHEID POSTCLASSICAL
POSTCRANIALLY POSTGRADUATES POSTINAUGURAL POSTLAPSARIAN POSTTRAUMATIC
POSTULATIONAL POTICHOMANIAS PRACTICALISMS PRACTICALISTS PRACTICALNESS
PRAEDIALITIES PRAGMATICISMS PRAGMATICISTS PREASSURANCES PRECAPITALIST
PRECLEARANCES PREECLAMPSIAS PREFABRICATES PRELAPSARIANS PREMENOPAUSAL
PREREHEARSALS PREVARICATORS PRIMIGRAVIDAS PRISMATICALLY PRIVATEERSMAN
PRIVATISATION PROCAPITALIST PROCARBAZINES PROCATHEDRALS PROCELLARIANS
PROCLAMATIONS PROCRASTINATE PROGRADATIONS PROGRAMMABLES PROLETARIATES
PROPAGANDISED PROPAGANDISER PROPAGANDISES PROPAGANDISMS PROPAGANDISTS
PROPAGANDIZES PROSAICALNESS PROSENCEPHALA PROSENCHYMATA PROSOPAGNOSIA
PROSTAGLANDIN PROSTANTHERAS PROTANOMALIES PROTANOMALOUS PROTOGALAXIES
PROTOSPATAIRE PSALIGRAPHIES PSEUDOSCALARS PSYCHASTHENIA PSYCHIATRICAL
PSYCHOANALYSE PSYCHOANALYST PSYCHOANALYZE PSYCHOMACHIAS PTERIDOMANIAS
PTEROSAURIANS PUTANGITANGIS PYROTARTRATES QUADRAPHONICS QUADRAPHONIES
QUADRAPLEGIAS QUADRAPLEGICS QUADRIPLEGIAS QUASIPARTICLE RADIOGRAPHERS
RADIOGRAPHIES RADIOPACITIES RAPACIOUSNESS REACCEPTANCES READAPTATIONS
REAPPEARANCES RECAPITALISED RECAPITALISES RECAPITALIZES RECAPITULATES
RELANDSCAPING REPAGINATIONS REPATRIATIONS REPLANTATIONS RESPIRATIONAL
RHAPSODICALLY SALESMANSHIPS SANDPAINTINGS SANDPAPERIEST SANDPAPERINGS
SARCOPHAGUSES SARSAPARILLAS SATANOPHANIES SATANOPHOBIAS SCAPEGOATINGS
SCAPEGOATISMS SCAPHOCEPHALI SCAPHOCEPHALY SCAPULIMANTIC SCAPULOMANTIC
SCEUOPHYLACIA SCRAPERBOARDS SCRATCHPLATES SCROPHULARIAS SEMIPALMATION
SEMIPARASITES SEMIPARASITIC SEPARABLENESS SEPARATIONISM SEPARATIONIST
SIALOGRAPHIES SOMATOPLASTIC SOMATOPLEURAL SPADICIFLORAL SPASMODICALLY
SPATTERDASHES SPEARCARRIERS SPECTACULARLY SPERMATICALLY SPERMATOBLAST
SPERMATOCIDAL SPERMATOGONIA SPERMATORRHEA SPERMATOTHECA SPERMATOZOANS
SPHACELATIONS SPREADABILITY STANDPATTISMS STAPHYLINIDAE STATESMANSHIP
STEGANOGRAPHS STEGANOGRAPHY STOMATOPLASTY STRAPHANGINGS STRATIGRAPHER
STRATIGRAPHIC SUBAPPEARANCE SUBLAPSARIANS SUBPARAGRAPHS SUFFRAGANSHIP
SULFORAPHANES SULPHADIAZINE SUPERABUNDANT SUPERACCURATE SUPERANNUABLE
SUPERANNUATED SUPERANNUATES SUPERNATATION SUPERNATIONAL SUPERNATURALS
SUPERSALESMAN SUPERSATURATE SUPPLANTATION SUPRACHIASMIC SUPRANATIONAL
SUPRARATIONAL SUPRATEMPORAL SYCOPHANTICAL SYLLABOGRAPHY SYMPATHETICAL
SYMPATRICALLY SYMPTOMATICAL SYNAPOSEMATIC TACHYGRAPHERS TACHYGRAPHIES
TACHYGRAPHIST TACHYPHRASIAS TACHYPHYLAXES TACHYPHYLAXIS TAPSALTEERIES
TERATOPHOBIAS THORACOPLASTY TRANSCRIPTASE TRANSPARENCES TRANSPARENTLY
TRANSPERSONAL TRANSPIRATION TRANSPIRATORY TRANSPLANTERS TRANSPLANTING
TRANSPORTABLE TRANSPORTANCE TRYPAFLAVINES TRYPARSAMIDES ULTRAPHYSICAL
UNACCEPTANCES UNAPOSTOLICAL UNCAPITALISED UNCOMPLAISANT UNPARASITISED
UNPARASITIZED UNPERSUADABLE UNPLEASURABLE UNPLEASURABLY UNPOLARISABLE
UNPURCHASABLE UNSPECTACULAR UNSURPASSABLE UNSURPASSABLY UNTRANSPARENT
UPPERCLASSMAN URANOGRAPHERS URANOGRAPHIES URANOGRAPHIST URANOPLASTIES
VALPOLICELLAS VAPORISATIONS VAPORIZATIONS VIBRAHARPISTS WAPPENSHAWING
WATERMANSHIPS XIPHIPLASTRAL YACHTSMANSHIP ZOOSPORANGIAL ZYGAPOPHYSEAL
ZYGAPOPHYSIAL